Do-it-yourself furniture is open source

This do-it-yourself furniture design can be downloaded for local manufacture, and is the start of a very cool idea. In it’s current rendition, there’s a fair amount of wood waste, but what if future furniture designed created less waste because it was square instead of round? I like that the pieces fit together in such a way that you don’t need other tools. I like that you can use whatever is your favorite local material, and give local business a leg up, instead of manufacturing in far away countries and then $hipping the products to you. Maybe this software and technology could be used to create components for my Build-a-Building idea?